diff --git a/src/python_testing/matter_testing_support.py b/src/python_testing/matter_testing_support.py
index 5416204a25afeb..a50effa95ecd65 100644
--- a/src/python_testing/matter_testing_support.py
+++ b/src/python_testing/matter_testing_support.py
@@ -320,7 +320,7 @@ def __call__(self, path: TypedAttributePath, transaction: SubscriptionTransactio
         """This is the subscription callback when an attribute is updated.
            It checks the passed in attribute is the same as the subscribed to attribute and
            then posts it into the queue for later processing."""
-           
+
         asserts.assert_equal(path.AttributeType, self._expected_attribute,
                              f"[AttributeChangeCallback] Attribute mismatch. Expected: {self._expected_attribute}, received: {path.AttributeType}")
         logging.info(f"[AttributeChangeCallback] Attribute update callback for {path.AttributeType}")
@@ -331,13 +331,15 @@ def wait_for_report(self):
         try:
             path, transaction = self._output.get(block=True, timeout=10)
         except queue.Empty:
-            asserts.fail(f"[AttributeChangeCallback] Failed to receive a report for the {self._expected_attribute} attribute change")
+            asserts.fail(
+                f"[AttributeChangeCallback] Failed to receive a report for the {self._expected_attribute} attribute change")
 
         asserts.assert_equal(path.AttributeType, self._expected_attribute,
                              f"[AttributeChangeCallback] Received incorrect report. Expected: {self._expected_attribute}, received: {path.AttributeType}")
         try:
             attribute_value = transaction.GetAttribute(path)
-            logging.info(f"[AttributeChangeCallback] Got attribute subscription report. Attribute {path.AttributeType}. Updated value: {attribute_value}. SubscriptionId: {transaction.subscriptionId}")
+            logging.info(
+                f"[AttributeChangeCallback] Got attribute subscription report. Attribute {path.AttributeType}. Updated value: {attribute_value}. SubscriptionId: {transaction.subscriptionId}")
         except KeyError:
             asserts.fail("[AttributeChangeCallback] Attribute {expected_attribute} not found in returned report")